Latch



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. LATCH..

APPLICATION ELLED MAY26, 1919.

1,37 1,341 Patend 15, 1921.

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PATENT oFI-lcla.A

NELSON o. YBILLINGS, oF EUGENE, OREGON.

LATCH.

Specification of L'etters Patent. Patented :lV-[211', A15, 1921.

Application led May 26, 1919. Serial No. 301,061.

T o all whom it may con-cem.'

Be it known that I, NELSON O. BILLINGS, a citizen of the United States, residing in the city of Eugene, countyof- Lane, and State of Oregon, have invented certain new and useful Improvements in Latches, of which the following is a Specification.

My invention relates to locks, and more particularly to an auxiliary locking member adapted to coperate with the -bolt of a lock, with means for interlocking said auxiliary locking member with the bolt at will so that it will move with the bolt in and out of the lock casing, or can be held within the case without interfering with the regular movement of the bolt. I have illustrated my improved locking member in connection with a knob-operated bolt, with means whereby said locking member can be connected to move with the bolt, or disconnected so as to remain in an inoperative position within the case without interfering with the operation of the bolt by means of the inner or outer knobs of the lock. It will be clearly evident that when the auxiliary member is out of the case with the bolt, it will be impossible with a thin instrument to engage the beveled end of the bolt and force the bolt into its case sufficiently to open the door. Thus the device is a burglar proof lock in that it prevents forcing the bolt back with a thin instrument, as is sometimes done.

In order to more fully explain my invention, I have illustrated the same on the accompanying sheet of drawings, in which,-

Figure 1 is a perspective view of a lock embodying my invention, showing the regular bolt and my auxiliary locking member projecting from the case adjacent the bolt;

Fig. 2 is a side elevation ywith the side plate removed to show the interior mechanism;

Fig. 3 is a transverse sectional view taken on line 3-3 of Fig. 2, with the side plate in position as in Fig. l;

Fig. 4 is a vertical sectional view on line 4.-4 of Fig. 2;

Fig. 5 is a perspective view of my auxiliary locking member, shown in its relationship to the bolt, shown in fragment.

Referring now more in detail to the drawings, 1 designates the lock case, 2 the usual bolt, adapted to be operated through a lever 3, a cam member 4, and a bolt or knob Stem (not shown) which extends through the case and through the cam member 4, in a well known manner. Other means for operating the bolt2 is indicated, but as it forms no part of the present invention, it needl not here be referred to. The bolt 2 is normally held extended from the caseby means ofa spring n5. Y

My auxiliary locking member as here shown for purposes of illustration, comprises a ybody 6, having an extension 7, pivotally connected to the case 1 by means of a bearing sleeve 8 and screw 9. Said locking member is bent or offset intermediate its ends, as at 10, whereby it is possible to reverse it when the bolt 2 is reversed in a manner well understood in the art. I prefer to notch the sides of the bolt, as at 11, to provide a seat for the body 6. The body 6 rests adjacent the bolt 2, and projects through the front edge of the lock case, as indicated in Figs. 1, 2 and 3. It is provided with a pin or stud, 12, projecting into the bolt 2, whereby when the bolt 2 is drawn into the lock case 1, said body 6 will also be moved inwardly therewith. A spring 13, attached at its upper end to the case, as at 14, and at its lower end to the auxiliary locking member as at 15, normally tends to move Said locking member out of the case with the bolt 2', which is moved outwardly by its spring 5. lThus the auxiliary locking member 6 can be moved in and out of the lock case with the bolt as the bolt is operated.

. When it is desired to hold the auxiliary locking member within the case and out of locking or extended position, I have rovided a stop member 16 slidable laterally in the front edge of the case 1 and adapted to be moved between the edge plate la of the lock case and the extension 7 at a time when the auxiliary lock is swung inwardly, as indicated in dotted lines in Fig. 2. When in this position the auxiliary locking member is inactive, or inoperative, without interfering with the regular operation of the bolt by means of the knobs in the usual manner. In order to set the auxiliary locking member in operative position, it is only necessary to move the stop 16 to one side. The stop is yieldingly held in moved position by means of a spring 17 and a bearing slide plate 18, set in the face of the edge plate 1a.

I am aware that many changes in details can be made in my invention as here illustrated without departing from the spirit thereof and I do not, therefore, limit my invention to the showing here made except as I may be limited by the hereto appendedY l off-set portion at its lower end adapted to claims.

I claim:

Y l. In a lock, in combination with a hous-V ing and a bolt With operating means there-A for, an auxiliary locklng member pivotally supported in said housing and having a part positioned adjacent said bolt and adapted to be moved in and out of said housingwith said bolt, with means for holding said auxiliary locking member Within said housing when desired. f v

2. In a lock, in combination With .a hous- 15 ing and a bolt with operating means therefor, an auxiliary vlooking member pivotally supported in said housing and having an rest along side of said bolt and means for moving it in and out of said housing with Vsaid bolt7 and means for holding said auxiliary lockingA member Within the housing when desired, substantially as shown and described.

' Signed at Eugene,V county of Lane, and State of Oregon, this 13thday of May, 1919.

. NELSON O. BILLINGS. .In presence of`V .JAMES SE( MASTERS, f J H. MoCLINTro. e e

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